starting off, the sex scandal involving david petraeus. key members of the house and senate say they knew nothing about the cia director's resignation until it was done. they say that's unacceptable. lawmakers are demanding answers about the fbi investigation that began months ago, over the summer, then uncovered that extramarital affair. the timing of it all could now keep general petraeus from testifying at a congressional hearing this week on the u.s. consulate attack in benghazi, libya. cnn's barbara starr starts us off. she's at the pentagon this morning. barbara, what are the biggest issues out of this scandal that we now know has exploded? >> right, soledad. first on capitol hill, the intelligence committees on the house and senate both contend, and quite accurately, that they are supposed to be informed of any crucial event regarding intelligence or national security. they did not know about petraeus. they're calling it a bolt out of the blue. why weren't they informed? that's what they want to know. the hearings that petraeus was